21644045

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{311}}^1\times {\mathrm{449}}^1$

素因数の和:796

約数の個数: 16

約数和(自身を含む): 26956800

約数和(自身を除く): 5312755

約数列:

[1, 5, 31, 155, 311, 449, 1555, 2245, 9641, 13919, 48205, 69595, 139639, 698195, 4328809, 21644045]

約数ペア:

[(1, 21644045), (5, 4328809), (31, 698195), (155, 139639), (311, 69595), (449, 48205), (1555, 13919), (2245, 9641)]